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Geo: addReplyDoubleDistance() precision set to 4 digits

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Also:
1. The function was renamed.
2. An useless initialization of a buffer was removed.
This commit is contained in:
antirez 2015-06-22 13:08:46 +02:00
parent b18c68aa7f
commit fc03d08ee0
1 changed files with 8 additions and 6 deletions
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14
src/geo.c
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@ -110,11 +110,13 @@ static double extractDistanceOrReply(redisClient *c, robj **argv,
}
/* The defailt addReplyDouble has too much accuracy. We use this
* for returning location distances. "5.21 meters away" is nicer
* than "5.2144992818115 meters away." */
static inline void addReplyDoubleMeters(redisClient *c, double d) {
char dbuf[128] = { 0 };
int dlen = snprintf(dbuf, sizeof(dbuf), "%.2f", d);
* for returning location distances. "5.2145 meters away" is nicer
* than "5.2144992818115 meters away." We provide 4 digits after the dot
* so that the returned value is decently accurate even when the unit is
* the kilometer. */
static inline void addReplyDoubleDistance(redisClient *c, double d) {
char dbuf[128];
int dlen = snprintf(dbuf, sizeof(dbuf), "%.4f", d);
addReplyBulkCBuffer(c, dbuf, dlen);
}
@ -510,7 +512,7 @@ static void geoRadiusGeneric(redisClient *c, int type) {
}
if (withdist)
addReplyDoubleMeters(c, gp[i].dist);
addReplyDoubleDistance(c, gp[i].dist);
if (withhash)
addReplyLongLong(c, zr->score);